The RSPCA wants to trace the owners of a German shepherd who was left tied up at a skatepark in Cambridgeshire over the Easter weekend.
Key, who is a white and black adult male, was found by a visitor to the park at Eye near Peterborough on Good Friday.
Although he is microchipped, RSPCA inspectors have not been able to get in touch with his most recent owners.
They are hoping there are two pet lovers sitting at home missing their dog.
The animal charity said Key was in a good condition and has been well cared for.
If anyone recognises the dog and believes he may be one that has been lost or stolen, they should contact the RSPCA.
Inspectors said they did not know the circumstances that led to Key being left at the skatepark but urged owners to seek help if they were struggling to cope.